ISO 7720:1997, Prevailing torque type all-metal hexagon nuts, style 2 - Property class 9

This International Standard specifies the characteristics of prevailing torque type all-metal hexagon nuts, of style 2, with threads from M5 up to and including M36, in product grade A for threads up to and including Ml6 and product grade B for threads above M16, and with property class 9.If other specifications are required, they should be selected from existing International Standards, for example ISO 261, ISO 965-2, ISO 2320 and ISO 4759-1.